Futaba G153, G153BB - Manual (Page 2)

OUTPUT ADJUSTMENT
•When using the switchable gyro output sensitivity feature,
connect connector (B) to the retract channel if possible.
However, a proportional channel can be used. The output
sensitivity switching point will then be at the center or
neutral area.
*When the transmitter landing gear switch is pulled for-
ward (or down), the output sensitivity can be adjusted
from 0 to 100% with trimmer (1).
*When the transmitter landing gear switch is pushed
back (or up), the output sensitivity can be adjusted
from 0 to 100% with trimmer (2). In this case, trim-
mers (1) and (2) do not interfere with each other, and
can be adjusted independently.
•When the output is fixed or there is no spare channel (as
with 4 channel set), do not connect connector (B). In this
case, adjust the output with control box trimmers (1) and
(2). (Insulate the terminals with vinyl tape so they cannot
be touched.)
*When trimmer (1) is 0, the output can be adjusted
from 0 to 50% with trimmer (2).
*When trimmer (1) is 100%, the output can be adjusted
from 50 to 100% with trimmer (2).
POWER SUPPLY
•When using the rate gyro with a separate power supply
(utilizing the motor voltage regulator), connect the five
cell Nicad battery pack (6V) to connector (C). Thereby,
maintaining constant motor speed and consistent gyro
performance. A four cell Nicad (4.8V) battery pack can-
not be connected to connector (C).
•Whenever a four cell Nicad battery pack (4.8V) is used, it
must be as a common power supply for the receiver and
gyro. Connect the accessory jumper connector to con-
nector (C), when using a 4.8 volt power supply.
•When the receiver and gyro use a common power supply,
rudder/servo power consumption and the power con-
sumed by the gyro, increases the total power consumption.
This decreases the number of permissible flights. The use
of a high capacity (4.8/1,000mA) Nicad battery is recom-
mended. (The Futaba NR-4I (4.8V/1000mA) Nicad bat-
tery pack can be purchased separately.)
(C) connector Jumper connector
FP-G133/G133BB
(C) connector Jumper connector
Connect the following to the (C) connector (control am-
plifier BATT):
* Five cell Nicad battery pack (6V) Our optional NR-5PB
(6V/450mAH) Nicd battery pack, etc. is recommended.
* Jumper connector, when the gyro and receiver use a com-
mon power supply
EXAMPLE
Adjustment when installed in a helicopter:
When using the switchable output sensitivity:
Set trimmer (1) to about the 80% of maximum output sen-
sitivity position (100% is full clockwise) as a starting point.
Hover with the wind and readjust trimmer (1) so that "tail
hunting" does not occur. However, do not reduce output
sensitivity to a point where the nose will turn upwind when
"lifting off".
Set trimmer (2) to about the 60% position when a large
rudder travel is unnecessary, such as 540° stall turns, etc.
Approx. 60%
Approx. 80%
Control box
•Do not expose the rate gyro to shock and vibra-
tion
•Do not disassemble or modify the rate gyro
When the inside of the gyro must be inspected, remove
the three screws on the side of the case and remove the
cover. Do not loosen the screws on the bottom of the
case. If these screws are loosened, the neutral position
may change at sensitivity or polarity switching.
•This gyro is not interchangeable with other
gyros or control amps.
When requesting repair after long use, accident, or
if any other trouble has occurred, describe the
problem in as much detail as possible. This will
allow us to isolate the trouble point quickly and
reduce the repair time.